---
name: "knet_get_compress_list"
section: "3"
platform: "linux"
package: "libknet-doc"
version: "1.31-1"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/knet_get_compress_list"
---

# knet\_get\_compress\_list(3)

Get a list of support compression types.

## NAME

knet\_get\_compress\_list - Get a list of support compression types.

## SYNOPSIS

```
#include <libknet.h>

int knet_get_compress_list(
    struct knet_compress_info   *compress_list,
    size_t                      *compress_list_entries
);
```

## DESCRIPTION

knet\_get\_compress\_list

compress\_list - array of struct knet\_compress\_info \* If NULL then only the number of structs is returned in compress\_list\_entries to allow the caller to allocate sufficient space. libknet does not allow more than 256 compress methods at the moment. it is safe to allocate 256 structs to avoid calling knet\_get\_compress\_list twice.

compress\_list\_entries - returns the number of structs in compress\_list

## STRUCTURES

```
Structure returned from get_compress_list() containing information about the installed compression systems
struct knet_compress_info {
    const char   *name;        /* Name of the compression type bzip2, lz4, etc.. */
    uint8_t       properties;  /* Properties - currently unused */
    char          pad[256];    /* Currently unused padding */
};
```

## RETURN VALUE

**knet\_get\_compress\_list returns 0 on success -1 on error and errno is set.**

## SEE ALSO

[*knet\_handle\_remove\_datafd*(3)](/knet_handle_remove_datafd/3.md), [*knet\_handle\_get\_stats*(3)](/knet_handle_get_stats/3.md), [*knet\_host\_add*(3)](/knet_host_add/3.md), [*knet\_handle\_pmtud\_setfreq*(3)](/knet_handle_pmtud_setfreq/3.md), [*knet\_handle\_pmtud\_get*(3)](/knet_handle_pmtud_get/3.md), [*knet\_handle\_crypto\_use\_config*(3)](/knet_handle_crypto_use_config/3.md), [*knet\_host\_get\_id\_by\_host\_name*(3)](/knet_host_get_id_by_host_name/3.md), [*knet\_host\_get\_status*(3)](/knet_host_get_status/3.md), [*knet\_link\_add\_acl*(3)](/knet_link_add_acl/3.md), [*knet\_link\_get\_pong\_count*(3)](/knet_link_get_pong_count/3.md), [*knet\_link\_get\_priority*(3)](/knet_link_get_priority/3.md), [*knet\_handle\_free*(3)](/knet_handle_free/3.md), [*knet\_handle\_enable\_sock\_notify*(3)](/knet_handle_enable_sock_notify/3.md), [*knet\_handle\_get\_datafd*(3)](/knet_handle_get_datafd/3.md), [*knet\_recv*(3)](/knet_recv/3.md), [*knet\_link\_get\_ping\_timers*(3)](/knet_link_get_ping_timers/3.md), [*knet\_log\_get\_subsystem\_id*(3)](/knet_log_get_subsystem_id/3.md), [*knet\_host\_remove*(3)](/knet_host_remove/3.md), [*knet\_host\_enable\_status\_change\_notify*(3)](/knet_host_enable_status_change_notify/3.md), [*knet\_strtoaddr*(3)](/knet_strtoaddr/3.md), [*knet\_link\_rm\_acl*(3)](/knet_link_rm_acl/3.md), [*knet\_send*(3)](/knet_send/3.md), [*knet\_handle\_enable\_pmtud\_notify*(3)](/knet_handle_enable_pmtud_notify/3.md), [*knet\_handle\_get\_transport\_reconnect\_interval*(3)](/knet_handle_get_transport_reconnect_interval/3.md), [*knet\_link\_get\_enable*(3)](/knet_link_get_enable/3.md), [*knet\_link\_set\_priority*(3)](/knet_link_set_priority/3.md), [*knet\_log\_set\_loglevel*(3)](/knet_log_set_loglevel/3.md), [*knet\_handle\_get\_channel*(3)](/knet_handle_get_channel/3.md), [*knet\_link\_get\_config*(3)](/knet_link_get_config/3.md), [*knet\_link\_get\_link\_list*(3)](/knet_link_get_link_list/3.md), [*knet\_get\_transport\_list*(3)](/knet_get_transport_list/3.md), [*knet\_get\_transport\_id\_by\_name*(3)](/knet_get_transport_id_by_name/3.md), [*knet\_log\_get\_loglevel\_id*(3)](/knet_log_get_loglevel_id/3.md), [*knet\_handle\_new\_ex*(3)](/knet_handle_new_ex/3.md), [*knet\_host\_set\_name*(3)](/knet_host_set_name/3.md), [*knet\_addrtostr*(3)](/knet_addrtostr/3.md), [*knet\_handle\_setfwd*(3)](/knet_handle_setfwd/3.md), [*knet\_host\_set\_policy*(3)](/knet_host_set_policy/3.md), [*knet\_get\_transport\_name\_by\_id*(3)](/knet_get_transport_name_by_id/3.md), [*knet\_handle\_enable\_filter*(3)](/knet_handle_enable_filter/3.md), [*knet\_handle\_crypto\_rx\_clear\_traffic*(3)](/knet_handle_crypto_rx_clear_traffic/3.md), [*knet\_handle\_compress*(3)](/knet_handle_compress/3.md), [*knet\_link\_get\_status*(3)](/knet_link_get_status/3.md), [*knet\_handle\_add\_datafd*(3)](/knet_handle_add_datafd/3.md), [*knet\_send\_sync*(3)](/knet_send_sync/3.md), [*knet\_log\_get\_loglevel\_name*(3)](/knet_log_get_loglevel_name/3.md), [*knet\_handle\_enable\_access\_lists*(3)](/knet_handle_enable_access_lists/3.md), [*knet\_host\_get\_host\_list*(3)](/knet_host_get_host_list/3.md), [*knet\_host\_get\_policy*(3)](/knet_host_get_policy/3.md), [*knet\_link\_set\_enable*(3)](/knet_link_set_enable/3.md), [*knet\_link\_set\_pong\_count*(3)](/knet_link_set_pong_count/3.md), [*knet\_log\_get\_subsystem\_name*(3)](/knet_log_get_subsystem_name/3.md), [*knet\_host\_get\_name\_by\_host\_id*(3)](/knet_host_get_name_by_host_id/3.md), [*knet\_link\_clear\_config*(3)](/knet_link_clear_config/3.md), [*knet\_log\_get\_loglevel*(3)](/knet_log_get_loglevel/3.md), [*knet\_handle\_new*(3)](/knet_handle_new/3.md), [*knet\_handle\_pmtud\_getfreq*(3)](/knet_handle_pmtud_getfreq/3.md), [*knet\_handle\_pmtud\_set*(3)](/knet_handle_pmtud_set/3.md), [*knet\_handle\_clear\_stats*(3)](/knet_handle_clear_stats/3.md), [*knet\_link\_set\_config*(3)](/knet_link_set_config/3.md), [*knet\_handle\_crypto\_set\_config*(3)](/knet_handle_crypto_set_config/3.md), [*knet\_handle\_crypto*(3)](/knet_handle_crypto/3.md), [*knet\_get\_crypto\_list*(3)](/knet_get_crypto_list/3.md), [*knet\_handle\_set\_transport\_reconnect\_interval*(3)](/knet_handle_set_transport_reconnect_interval/3.md), [*knet\_link\_clear\_acl*(3)](/knet_link_clear_acl/3.md), [*knet\_link\_set\_ping\_timers*(3)](/knet_link_set_ping_timers/3.md), [*knet\_link\_insert\_acl*(3)](/knet_link_insert_acl/3.md)

## COPYRIGHT

Copyright (C) 2010-2025 Red Hat, Inc. All rights reserved.